Emerson Baumann 25000 Lo-T Series User manual

PRELIMINARYSTEPS
Beforeinstallation,notetheflowdirectionarrowonthevalve
body. The flow should enter the valve on the concave side
ofthe vane. Thatis, theside havingthe exposedshaft.
All valve bodies are rated Class 300 and installs between
ANSIClass 150and 300 or DIN PN 10 and25 lineflanges.
However,makesurethatthevane(2) is in theopenposition
afterinstallation when the pipe lineis hydrostaticallytested
since the vane (2) and shaft (3) are not rated for the full
hydrostaticpressuredifferential.
INSTALLATION
Beforeinstallingthevalve body betweenthematingpipeline
flanges,makesurethatthevane(2)is in the closedposition.
Forfail open valves, this canbe doneby applying 20 psi air
pressureto theactuator(donotexceed35 psi)orwiththetop
mountedhandwheel(optional). Afterinstallation,pleaseback-
offhandwheeltoallow for full vaneoperation.
The valve bodies are flangeless and will fit between line
flangeswith raisedfaces of Class 150 or 300 and between
metricflangesof PN 10,16and25. Nevertheless, the valve
must be properly aligned with the center of the flange to
avoid interference of the flange bore with the vane. The
vaneispurposely kept undersizedsothat it willswingfreely
into a flange bore corresponding to a schedule 80 pipe ID.
1. Installtierodsthroughlowerflangeholestoforma cradle
for the valve body. For 4” body or Class 300 flange
mounting,tubularspacersmaybeplaced over lower tie rods
to lift body to center. Next, place gaskets on either side of
valve body and add remaining tie rods. Be sure body is
centeredwith flangesbeforetighteningalltierods.
2. Before placing the valve in operation, stroke the valve
through its full travel by applying manually regulated air
pressuretotheactuator,orbystrokingthevalveby meansof
ahandwheel(ifprovided).
TEMPERATURELIMITS
NOTE: ThebearingsandpackingareTeflonlubricatedwhich
limitstheoperatingtemperaturesto4500F(3250Ffor
stainlesssteelbodies) unless specialmaterialsare
specified.
VALVE BODY MAINTENANCE
BODYDISASSEMBLY
1. Disconnectairlinesfromactuatororpositioner.
2. Applyairpressureorusehandwheel,ifprovided,tobring
theactuatorstem(35)down(onlyrequiredfor“air-to-open
installations).
3. Remove5/16”-24hexhead cap screws(25),washer(26)
andpointer(38)from shaftend(3).
4. Unscrew hex head cap screw(39) and locknut(29) to
loosenlinkages(18&18a)onshaft(3).
5. Remove hex nuts(13) and slide packing flange(7) and
packingfollower(6)away from valvebonnet.
6. Removetwo(2)hexhead cap screws(12)frombracket
(17) and pull complete actuator with bracket(17) from
shaft(3) and away from valve body(1).
NOTE: Orientationofbracketandlinkageforreassembly.
REMOVALOF GUIDE BUSHINGS
1. Removepackingrings(15),bottomring(5)andspring(10).
2. Remove outboard bearing cover assembly(16). (Not
requiredfor2” valvesize.)
3. Driveouttaperpins(14) by placinga5/32” diameterpin
throughdrilledholesfromthedownstreamsideofthevane
andhitgentlywithhammer.
4. Removeshaft(3)andpull out vane(2).
NOTE: Rememberorientationofvaneforreassembly.
5. Usean11/16”diameteror18mmdiametermetalrodand
pushguides(4)towards center openingofthe body.
REPLACINGPACKINGRINGS
1. Insertcompressionspring(10) and bottom ring(5) over
shaft(3)andintobonnet.
25000 Series Lo-TTM Butterfly Control Valve
Instructions
November2001 Instruction No. 25.1:IM
WARNING: For Warnings and Cautions refer to
Supplemental Safety Instruction No. SSI-1
BAUMANN INC., 2001; All Rights Reserved

2. Install 5/8”x1”diameter packing ringsover shaft (one
atatime)andcompress(poundwithhollowmetalbar).
NOTE: For skive-cut rings rotate each ring
approximately600againstthepreviousring.
REASSEMBLEVALVE
1. Reassemble thevalve in reverseorder aspreviously
described. Makesurethevanetouchesthebodybore
properly when actuator is in the “closed” position by
rotatingthebracketwith actuator attached“clockwise”
for air-to-open within the clearance of sockethead
screws(12)(“counterclockwise”forair-to-close). This
will preload the actuator springs slightly. Tighten
socketheadcapscrews(12)inthepreloadedposition.
NOTE:For“fail-close”action,the vane always closes
whentheshaftisturnedclockwiseandcounterclockwise
for“fail-open”action.
2. Realignpointer(38)ifnecessaryandtightenhexhead
capscrew (25).
3. Rotateshaftwithvanethrough about 700from closed
position. Thereshouldbenointerference.
IMPORTANT:
When replacing bracket(17), remove taper
pins(14)fromvane(2)andredrilltaper pin holes
inshaft(3)(newshaftisrequired)afterthevane
hasbeenfullyassembledwithactuatorinplace
andincorrectstrokeposition,andshaftispressed
against ball bearing(24) by cap screw(25).
Vane should be in closed position and kept in
centerofbody borewithpaper shims.
ACTUATOR MAINTENANCE
REPLACEDIAPHRAGM
1. Disconnectairlines.
2. Remove cap screws(45), nuts(46), and upper
diaphragmcase(41).
3. Hold lower portion of actuator stem(35) with 11/16”
wrench. Loosen and remove head bolt(49) and
diaphragmplate(42).
NOTE:Spring load will be relieved.
4. Replace diaphragm(43). Note location of bolt holes
andmakesuretherolled portion ofthediaphragmfits
into the lower diaphragm case(40). Do not disturb
springs(47).Replaceheadbolt(49)andtighten.
5. Reassemble upper diaphragm case(41) and check
operationwithairthrough1-9/16”stroke. Thereshould
be no more than 2% of signal span deadband (no
valveattached).
REVERSEACTION
1. Removeairlines.
2. Removeactuator,shaft(3)andvane(2).
3. Reinstallvane(2)inreversedirection,i.e.closingclockwise
insteadofcounterclockwiseor vice versa.
4. With vane in new location, it is recommended to replace
with new shaft(3) for better results. Slide actuator back
onto shaft(3). Retighten all cap screws(12)(25)(39) as
previouslydescribed. Bringactuator into“closed”position.
5. Redrillpinholes (14) of vaneandshaftinnewlocationwith
edgeofvanepushedfirmlyintohousing (use c-clamp).
DISASSEMBLEACTUATOR
1. Removeactuatorfromvalvebody.
2. Unscrew hex head cap screws(45) and remove upper
diaphragmcase(41).
3. Removeheadbolt(49)whileholdingactuatorstem(35) with
11/16”wrench.
NOTE: Springloadwillbereleased.
4. Pulldiaphragmplate(42)withdiaphragm(43)fromassembly.
5. Hold actuator stem(35) with wrench and unscrew ball
joint(36). ReplaceBelleville washers(51)ifrequired.
6. When replacingball joint(36) makesure distance3-7/32”
(82mm)fromcenterofballtolowerdiaphragmcase(40)is
maintained. Tightentravelstop(48)withjamnut(30).
REASSEMBLYOFACTUATOR
1. Attach stem(35) to diaphragm plate(42) using head bolt
(49)andBellevillewasher(51).
2. Placesprings(47)(use 4for4-15psibenchrangeand 6for
6-22 psi or 8-35 psi bench range) into lower diaphragm
case(40).
3. Place diaphragm plate(42) over springs(47). Rotate
diaphragm plate(42) back and forth until all springs are
centeredonguides (place4springssymmetrically).
4. Attach diaphragm(43) to diaphragm plate(42) with head
bolt(49).
NOTE:Holestoline up withlowerdiaphragm case(40).
5. Placeupperdiaphragmcase(41) on top of lower case (40)
andtightenhexheadcapscrews(45) and nuts(46) evenly.
Pushspring(47)down to engagescrews(45).
6. Applyapproximately10psiairpressuretoactuatorormove
stem(35)downwithoptional handwheel if provided.
7. Removeairpressureandturnactuatoroverforbracket(17)
topoint up. Inserttravel stop(48)with flatfacing towards
openinginbracket. Next,screwballjoint(36)intostem(35)
untilcenterofballjointextends3-7/32”fromlowersurfaceof
diaphragmcase(40). Lockwithjamnut(30).
NOTE:Balljointto be perpendiculartovalvestem axis.
8. Place pair of linkages(18) as shown; ensure that linkage
withslotfaces towards valve. Insertscrew(39) and partly
engagenut(29)(linkagetohangloose).
Note Orientation: Extended side oflinkage hubsto face
outwards.
9. Apply approximately 10 psi air pressure to actuator and
slideactuator,packing follower(6),packingflange(7) and
linkages(18 & 18a) onto shaft(3). Note vane location for
reassembly. Actuatorstem(35)should be pusheddown.
-2-

10. Engagescrews(12)andboltbracket(17)againstvalve
body(1). Engagenuts(13)fingertight,thentightennuts
1/2to1 full turnusinga wrench.
11. Insert screw(25) with pointer(38) and washer(26) to
shaft(3)andtighten.
12. Slide linkages(18) to center of tube bracket(17) and
tighten screw(39). (This will lock linkages (18) on to
shaft(3).)
13. Use air pressureto stroke actuatorthrough full travel
(1-9/16”); there should be no binding or deadband
exceeding0.8psi,checkforair leakage.
14. Make sure shaft is tight against ball bearing(24), tighten
hex head cap screws (25).
15. Pin vane(2) to shaft(3) in the “closed” valve position if
required.
16. Align pointer(38) withserialplate(62) inthe“closed” vane
position.
17. Setlowertapscrew(31)ifrequiredtolimitdowntravel.
-3-

PARTS REQUIRED FOR HANDWHEEL
(Replace Upper Diaphragm Case P/N 25989
with P/N 25990 when using handwheel)
ITEM QTY DESCRIPTION PART NO.
52 1 Handwheel w/stem 25985
57 1 Adapter 25978
58 1 Self-Locking Nut 25924
60* 1 O-Ring 25926
61 1 Lock Nut 25979
-4-

*Recommended Spare Parts
CARBONSTEELBODYSUBASSEMBLY
STAINLESSSTEELBODYSUBASSEMBLY
ITEM QTY DESCRIPTION 2" 3" 4" 6" 8"
1 1 Body 25202S 25203S 25204S 25206S 25208S
2 1 Vane 25402S 25403S 25404S 25406S 25408S
3 1 Shaft 25882S 25883S 25884S 25886S 25888S
4* 2 Guide, PTFE Fiberglass 25609 25601 25618
Guide, Stellite 25625 25626 25627
10 1 Spring 25702 N/A
14* 2 Taper Pin 25707-2 25707-3-4 25707-6 25707-8
16 1 Cover N/A 25630 25631
81 1 Gasket N/A 25635 24156
82 1 Flange, Bearing Cover N/A 25632 25633
83 2 Sockethead Screw N/A 25718
ITEM QTY DESCRIPTION 2" 3" 4" 6" 8"
1 1 Body 25202 25203 25204 25206 25208
2 1 Vane 25402S 25403 25404 25406 25408
3 1 Shaft 25882 25883 25884 25886 25888
4* 2 Guide, PTFE/Bronze 25608 25600 25617
10 1 Spring 25702 N/A
14* 2 Taper Pin 25707-2 25707-3-4 25707-6 25707-8
16 1 Cover N/A 25630 25631
81 1 Gasket N/A 25635 24156
82 1 Flange, Bearing Cover N/A 25632 25633
83 2 Sockethead Screw N/A 25718
-5-
PARTS
KEY
NO. QTY DESCRIPTION PART NO.
36* 1 Ball Joint 25894
1 Ball Joint, Hi-Temp 25894-1
38 1 Pointer 25911
39 1 Hex Head Cap Screw 25863
40 1 Lower Diaphragm Case 21935
41 1 Upper Diaphragm Case 25989
42 1 Diaphragm Plate 0.330-0420
43* 1 Diaphragm 24698
1 Diaphragm, Hi-Temp 24698-721
45 6 Hex Head Cap Screw 25913-1
2 Hex Head Cap Screw 24783
46 8 Nut 971511-011-250
47
4 Springs (4-15psi) 25940
6 Springs (6-22psi) 25940
6 Springs (8-35psi) 21819
48 1 Travel Stop 21826
49 1 Head Bolt 25987
51 2 Belleville Washer 25918
62 1 Serial Plate 25901
63 3 Washer SAE #12 25914
93 4 Lockwasher 20057
94 1 Coupler 21802
KEY
NO. QTY DESCRIPTION PART NO.
5* 1 Bottom Ring 25602
6* 1 Packing Follower S/A 41611
78 1 Packing Flange 25606
11 2 Stuffingbox Studs 25703M
12 2 Sockethead Screw 25836M-1S
13 2 Hex Nuts 25705M
15* 5 Packing Ring 25708-1/-2
17 1 Yoke, Actuator 25881
18 2 Linkage 20052
19 2 Lockwasher 25736
24* 1 Ball Bearing Assembly 25850
25 1 Hex Head Cap Screw 25860S
26 1 Washer 25861
27 4 Hex Head Cap Screw 20086
28 4 Nut 971511-010-250
29 1 Locknut 21804
30 1 Jam Nut 971514-002-250
31 1 Set Screw 42788
32 1 Jam Nut 42789
33 9 Lockwashers 25734
35 1 Actuator Stem 25937

The Emersonlogo isa trademarkand servicemark ofEmerson ElectricCo. FIELDVUE and FloVue aremarks owned by BaumannInc., Fisher ControlsInternational, Inc.or Fisher-RosemountSystems, Inc.
Allother marksare theproperty oftheir respectiveowners.
Thecontentsof this publicationarepresented for informationalpurposesonly, andwhileeveryeffort hasbeenmadeto ensuretheir accuracy,theyarenot tobeconstrued as warrantiesorguarantees, express or
implied, regardingthe productsor servicesdescribed hereinor theiruse orapplicability. We reserve theright tomodify or improvethe designsorspecifications ofsuch productsat anytime withoutnotice.
Baumann Inc.
35 Mirona Road
Portsmouth, NH 03801
T 1(603) 436-2044
F 1(603) 436-4901
BAUMANN INC.
SubsidiaryofFisherControlsInternational,Inc.
This product may be covered under one or more of the following patents 4,469,305 or under pending patent applications.
DIMENSIONS
VALVE SIZE
(INCHES) A B C WEIGHT (LBS)
2 6.73 4.00 1.56 27
3 7.30 5.25 1.56 31
4 7.96 6.45 1.56 37
6 9.56 8.63 2.00 43
8 10.65 10.81 2.50 60